27 lines
535 B
GLSL
27 lines
535 B
GLSL
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#ifdef GL_ES
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precision mediump float;
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precision mediump int;
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#endif
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// Input :
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uniform sampler2D EW_texID;
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varying vec2 f_texcoord;
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varying vec4 f_color;
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void main(void) {
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vec4 tmpcolor = texture2D(EW_texID, f_texcoord);
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vec4 outColor = vec4(0,0,0,0);
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// compare distance with 0.5 that represent the middle ...
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if (tmpcolor[3]>0.5) {
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outColor = f_color;
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outColor[3] = 1.0;
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} else if (tmpcolor[3]>0.49) {
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// antialiasing :
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outColor = f_color;
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outColor[3] = (tmpcolor[3]-0.49)*1.0/0.02;
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}
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gl_FragColor = outColor;
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}
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